
Description
Match the hose and the port separately
This black plastic elbow joins a 25mm barbed hosetail to a ¾-inch BSP male thread, with a fixed 90° bend between them.
Use it to bring suitable hose away from a matching threaded connection on pond equipment or fittings. Check both ends and the space around the port before ordering.
One elbow supplied. Hose, clips and pump are separate.

One fitting, two checks
The hose size does not determine the thread you need.
Check the female port
The threaded end is ¾-inch BSP male. Confirm a compatible female connection and its sealing requirements. A 25mm hose outlet or a 1-inch BSP port is a different connection.
Check the hose bore
The ribbed end is a 25mm hosetail. Match the hose’s internal bore and wall profile to that fitting. Its outside diameter includes the wall, so it is not the measurement to match.
Check the route
Leave room for assembly and a gradual hose curve beyond the barb. Keep the hose supported, avoid pulling on the threaded body, and retain access to inspect both joints.
Fit, secure and inspect
Follow the equipment’s connection instructions.
Use the required seal at the threaded joint and suitable hose securing parts where needed. Tighten plastic fittings with care; an elbow should not be forced into position or used to support an unsupported hose run.
Check the completed joints with water before concealing the connection. If replacing another elbow, compare its thread specification and hose size as well as its shape.
Choosing the correct elbow
Why does this have 25mm and ¾-inch sizes?
The 25mm size identifies the barbed hose connection; ¾-inch BSP identifies the male thread. They are separate sizing conventions, not two ways of measuring the same end. Choose suitable 25mm-bore hose for the hosetail and a compatible ¾-inch BSP female port for the thread. Check the connection profile and sealing method in your equipment instructions.
Is this the same as the 25mm elbow with a 1-inch BSP thread?
No. Both have a 25mm hosetail, but the threaded ends are different. This version is ¾-inch BSP male. The 1-inch BSP version needs a different female port, so they should not be chosen interchangeably. Read the thread specification on the equipment or fitting you are connecting to, rather than selecting from the hose diameter alone.
Can the elbow turn freely once installed?
No. The 90° elbow has a fixed body, rather than a swivel joint. Plan the final hose direction before assembly and follow the port’s sealing and tightening instructions. Do not use the hose as a lever or force the plastic thread further simply to obtain an angle. Leave space for the hose to curve gently beyond the fitting.
Does the connector include hose clips or a pump?
No. One elbow connector is supplied. Hose, hose clips and pump are separate. The neutral description image illustrates the elbow style rather than providing measured dimensions. Match the written 25mm hosetail and ¾-inch BSP male specifications, use appropriate securing and sealing parts where required, and inspect both joints with water after assembly.
Product information & technical details
| SKU | POND25B34BSPMELB001 |
|---|---|
| Product type | |
| BSP thread size | 3/4" |
| Thread gender | Male |
| Barb size | 25mm (1") |
| Colour | Black |
|---|---|
| Material | Plastic |
| Connection layout | Fixed 90° elbow: 25mm hosetail to ¾-inch BSP male thread |
| Thread size convention | ¾-inch BSP is a nominal thread size; it does not describe the hose bore |
| Contents | One elbow connector; hose, hose clips and pump not included |
What is BSP?
What is BSP thread size?
BSP (British Standard Pipe) is a nominal pipe-thread size, not a direct measurement of a fitting’s bore or outside diameter. For example, a ½-inch BSP male thread measures about 21mm across its outer thread crests.
These figures are approximate outside diameters of male BSP threads, to help identify the nominal size. They are not inch-to-millimetre unit conversions:
- 3/8" BSP → 16.66 mm
- 1/2" BSP → 20.95 mm
- 3/4" BSP → 26.44 mm
- 1" BSP → 33.25 mm
- 1.25" BSP → 41.91 mm
- 1.5" BSP → 47.80 mm
- 2" BSP → 59.61 mm
- 3" BSP → 87.88 mm
- 4" BSP → 113.03 mm
All our BSP threads are parallel (BSPP, to ISO 228), not tapered.
Measure across the outside of a male thread, then check its pitch and whether it is parallel or tapered. Diameter alone does not confirm compatibility. Check the product’s stated thread specification before connecting.
All delivery times are estimates and not guaranteed. Orders placed before 1 pm, Monday to Friday (excluding bank holidays), will be dispatched the same day, while orders placed after 1 pm will be dispatched by the end of the next working day.
If an invalid postcode or address is provided, the order will be cancelled without further notice, as we are unable to modify addresses or print labels for invalid postcodes.
Our standard delivery option is Royal Mail Tracked 48, which typically takes 3–5 business days. If you need your order more quickly, Expedited delivery via Royal Mail Tracked 24 is available, offering a 1–2 business day service.
Large or bulky items may be sent via courier at our discretion and are usually dispatched for next-day delivery. Please note that we only ship to mainland UK addresses; delivery to non-mainland locations, including the Highlands & Islands, may not be available for large or heavy items. If your address falls into one of these areas and you wish to purchase such items, please contact us with your postcode and order details before placing your order. If we cannot ship to you, you are welcome to arrange your own courier for collection.
All products, unless otherwise stated, come with a standard manufacturer warranty against faulty workmanship.
If your product fails within six months of delivery, please contact us with your order reference number, a description of the issue, and clear images illustrating the fault.
Should your item require a return for further investigation, it is your responsibility to arrange and cover postage back to us.
If we are unable to repair the fault, we may offer either a replacement or a full refund.
In cases where the item is inspected and found not to be faulty, or where damage is determined not to be due to manufacturing defects, you will not be entitled to a refund or replacement. We will then either return the item to you via standard post or dispose of it at your request.
You may return any order within 14 days of delivery. As soon as you receive your items, please inspect them carefully, taking reasonable care to keep both the product and its packaging clean and undamaged. If you discover an error or defect after 14 days, we reserve the right to decline your return. If your product fails or breaks after this 14-day time window then your order may be eligible for a warranty claim, please see our warranty information for more details.
To initiate a return, please contact us via our contact form to obtain a return authorisation and the correct returns address (different from the address on your invoice). This can also be done through your 'recent orders' page on your account if you are registered with Shop. Returns sent without prior authorisation will be discarded.
Returned items must be in the same condition in which you received them: unworn or unused, with tags attached and in their original packaging. You must include either a copy of your invoice or a slip with your order reference number inside the parcel. Please be sure not to obscure your return reference number on the label.
If you refuse delivery or reject the parcel without prior notice, we will inspect the returned package and issue a refund upon receipt. Although there is no restocking fee, we will deduct the cost of the return postage label (£3.35) from your refund.
If the returned item or its packaging shows signs of use, damage, or staining, we may deduct up to 50% of the order value, or refuse the return entirely, depending on its condition. Examples include damaged tags, stained, modified or damaged packaging, or missing components.
For faulty, incorrect, or damaged items, please contact us before sending anything back so we can attempt to resolve the issue directly. If we agree that a return is necessary due to our error, we will provide you with a pre-paid return label.
Products that have been modified or damaged through customer action are not eligible for return. This includes, but is not limited to, items that have been cut, trimmed or otherwise altered (such as a tarpaulin or pond liner resized to your specifications), or any product showing damage beyond normal inspection handling.
All delivery times are estimates and not guaranteed. Orders placed before 1 pm, Monday to Friday (excluding bank holidays), will be dispatched the same day, while orders placed after 1 pm will be dispatched by the end of the next working day.
If an invalid postcode or address is provided, the order will be cancelled without further notice, as we are unable to modify addresses or print labels for invalid postcodes.
Our standard delivery option is Royal Mail Tracked 48, which typically takes 3–5 business days. If you need your order more quickly, Expedited delivery via Royal Mail Tracked 24 is available, offering a 1–2 business day service.
Large or bulky items may be sent via courier at our discretion and are usually dispatched for next-day delivery. Please note that we only ship to mainland UK addresses; delivery to non-mainland locations, including the Highlands & Islands, may not be available for large or heavy items. If your address falls into one of these areas and you wish to purchase such items, please contact us with your postcode and order details before placing your order. If we cannot ship to you, you are welcome to arrange your own courier for collection.
All products, unless otherwise stated, come with a standard manufacturer warranty against faulty workmanship.
If your product fails within six months of delivery, please contact us with your order reference number, a description of the issue, and clear images illustrating the fault.
Should your item require a return for further investigation, it is your responsibility to arrange and cover postage back to us.
If we are unable to repair the fault, we may offer either a replacement or a full refund.
In cases where the item is inspected and found not to be faulty, or where damage is determined not to be due to manufacturing defects, you will not be entitled to a refund or replacement. We will then either return the item to you via standard post or dispose of it at your request.
You may return any order within 14 days of delivery. As soon as you receive your items, please inspect them carefully, taking reasonable care to keep both the product and its packaging clean and undamaged. If you discover an error or defect after 14 days, we reserve the right to decline your return. If your product fails or breaks after this 14-day time window then your order may be eligible for a warranty claim, please see our warranty information for more details.
To initiate a return, please contact us via our contact form to obtain a return authorisation and the correct returns address (different from the address on your invoice). This can also be done through your 'recent orders' page on your account if you are registered with Shop. Returns sent without prior authorisation will be discarded.
Returned items must be in the same condition in which you received them: unworn or unused, with tags attached and in their original packaging. You must include either a copy of your invoice or a slip with your order reference number inside the parcel. Please be sure not to obscure your return reference number on the label.
If you refuse delivery or reject the parcel without prior notice, we will inspect the returned package and issue a refund upon receipt. Although there is no restocking fee, we will deduct the cost of the return postage label (£3.35) from your refund.
If the returned item or its packaging shows signs of use, damage, or staining, we may deduct up to 50% of the order value, or refuse the return entirely, depending on its condition. Examples include damaged tags, stained, modified or damaged packaging, or missing components.
For faulty, incorrect, or damaged items, please contact us before sending anything back so we can attempt to resolve the issue directly. If we agree that a return is necessary due to our error, we will provide you with a pre-paid return label.
Products that have been modified or damaged through customer action are not eligible for return. This includes, but is not limited to, items that have been cut, trimmed or otherwise altered (such as a tarpaulin or pond liner resized to your specifications), or any product showing damage beyond normal inspection handling.